This document specifies the third version of the Synchronized Multimedia
Integration Language (SMIL, pronounced "smile"). SMIL 3.0 has the following
design goals:

Define an XML-based language that allows authors to write interactive
multimedia presentations. Using SMIL, an author can describe the temporal
behaviour of a multimedia presentation, associate hyperlinks with media
objects and describe the layout of the presentation on a screen.

Allow reusing of SMIL syntax and semantics in other XML-based
languages, in particular those who need to represent timing and
synchronization. For example, SMIL components are used for integrating
timing into XHTML [XHTML10] and into SVG
[SVG].

Extend the functionalities contained in the SMIL 2.1 [SMIL21] into
new or revised SMIL 3.0 modules.

Define new SMIL 3.0 Profiles incorporating features useful within the
industry.

This section describes the status of this document at the time of its
publication. Other documents may supersede this document. A list of current
W3C publications and the latest revision of this technical report can be
found in the W3C technical reports index
at http://www.w3.org/TR/.

This is a Last Call Working Draft of a possible future W3C Recommendation
of the SMIL 3.0 specification. This document has been produced by the SYMM Working Group as part of
the W3C Synchronized Multimedia
Activity. The goals of the SYMM Working Group are discussed in the SYMM
Working Group Charter. The authors of this document are the SYMM Working
Group members. Different parts of the document have different editors.

This SMIL 3.0 edition is a new version, it extends the
functionalities contained in SMIL 2.1 [SMIL21], incorporating new features
useful within the industry.

The Last
Call review period for this document extends until 14 September 2007. The
public is invited to send comments or report errors on this document. Please
send them to the public mailing www-smil@w3.org - (public archives)
including the prefix'[SMIL30 LC comment]' in the subject
line.

Publication as a Working Draft does not imply endorsement by the W3C
Membership. This is a draft document and may be updated, replaced or
obsoleted by other documents at any time. It is inappropriate to cite this
document as other than work in progress.